Mohammed Faisal, F. and Y. Hasan, S. 2018. Strehl Ratio for Annular Eccentric Circular Aperture with Presence of Seidel Aberrations. International Journal of Engineering and Technology. 7, 4.36 (Dec. 2018), 674–677. DOI:https://doi.org/10.14419/ijet.v7i4.36.24221.